Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
A．when B．if C．before D．until
We haven’t discussed yet ______ we are going to place our new furniture.
A．that B．which C．what D．where
I think this bike is a little better than that one, but the shopkeeper charged me almost_______ for it.
A．as many twice B．twice as many
C．twice as much D．as much twice
There is little chance that we will succeed in changing the law. ______, it is important that we should have a try.
A．Therefore B．Otherwise C．However D．Thus
When it was his turn to deliver(发表) speech, ______, he walked towards the microphone.
A．nervously and embarrassingly B．nervous and embarrassedly
C．nervously and embarrassing D．nervous and embarrassed
She brought with her three friends, none of _____ I had ever met before.
A．them B．who C．whom D．these
